Unreal Engine Issues
Unreal Engine Issues
Crash after deleting Editor Utility Widget and accessing it from Window menu
Tools - Feb 25, 2019Crash after deleting Editor Utility Widget and accessing from Window menu ...
Crash reimporting a skeletal mesh with less Material IDs than on first import
NOTE: Does not occur in 4.16, entered this to find a fix for licensee to integrate. Error message: Assertion failed: (Index >= 0) & (Index < ArrayNum) [Link Removed] [Line: 633] Array index out o ...
[CrashReport] UE4Editor_Engine!UGameViewportClient::Draw() [gameviewportclient.cpp:1170]
UE - Graphics Features - Apr 4, 2017Was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 (first/seco ...
[CrashReport] UE4Editor_Core!FTaskGraphImplementation::WaitUntilTasksComplete() [taskgraph.cpp:1121]
Tools - Apr 5, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: CurrentThreadIfK ...
[CrashReport] Fatal error: Couldn't find shader - FMaterial::GetShader()
UE - Graphics Features - Jul 20, 2017This is a common crash affecting users in 4.16. User DescriptionsTried to edit the VivePreController Meshtried to edit SM_Skysphere after shaders had finished compiling. For no other reason than th ...
Editor crash (unhandled assert) when changing blend mode on a material assigned to a Nanite static mesh
UE - Rendering - Features - Nanite - Oct 23, 2026POST LINK: https://forums.unrealengine.com/t/editor-crash-unhandled-assert-when-changing-blend-mode-on-a-material-assigned-to-a-nanite-static-mesh/2764048 POST BODY:Summary Changing a material's Bl ...
[CrashReport] UE4Editor_CoreUObject!IncrementalPurgeGarbage() [garbagecollection.cpp:1042]
UE - Editor - UI Systems - Localization - May 31, 2016This JIRA is being entered as a result of being one of the top crashes in 4.12 Preview 5 In the 4.12.0 release, we currently have a user on the Answerhub who experiences this crash: https://answers ...
[CrashReport] UE4Editor_LevelEditor!SLevelViewport::SaveConfig() [slevelviewport.cpp:2019]
Tools - Sep 6, 2016This JIRA is being entered as a result of it being one of the top crashes in 4.13.0. Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 2004 ...
Crash When Attempting to Add Existing Streaming Levels Already Present in the Levels Window
Tools - Aug 10, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
Missing UV Clamping or Clear in SunAlphaPS_Mobile
UE - Platform - Mobile - Graphics - Nov 13, 2025In: void SunAlphaPS_Mobile( float2 InUVs[8] : TEXCOORD0, in FStereoPSInput StereoInput, out HALF_TYPE OutColor : SV_Target0 ) { OutColor = SunUnBias(SunShaftAndDofTexture.Sample(SunShaftAndDo ...